Fans and friends are mourning the loss of TV fitness icon Richard Simmons at age 76, who passed away at his home on July 13. The cause of death is unknown. Simmons, famous for his Sweatin' to the Oldies videos, received an outpouring of tributes on social media. Celebrities like Ricki Lake and Sally Jessy Raphael honored his positive impact on their lives. Simmons' high-energy aerobics videos made him a household name in the 1980s, but he had largely retreated from public life in recent years. He had revealed a skin cancer diagnosis and had expressed a desire for privacy. Simmons' legacy of promoting exercise, diet, and kindness endures, as fans remember him as a sweet, positive, and kind man who changed many lives.